Oxidation Ditch Maintenance: Case Studies thiab Kev Ua Zoo Tshaj Plaws rau Kev Kho Dej Ncua Dej
Lub luag haujlwm tseem ceeb ntawm kev saib xyuas zoo hauv Oxidation Ditch Performance
Raws li tus kws tshaj lij kho dej khib nyiab nrog ntau tshaj 15 xyoo ntawm kev paub, Kuv tau pom ua ntej yuav ua li cas cov tswv yim kho kom zoo tuaj yeem txuas ntxiv lub neej ua haujlwm thiab txhim kho kev ua haujlwm ntawm oxidation ditches hauv cov chaw kho mob. Oxidation ditches sawv cev rau ib qho ntawm cov kev txhim khu kev ntseeg siab tshaj plaws hauv kev kho dej khib nyiab thev naus laus zis, paub txog lawv cov txiaj ntsig hauv kev tshem tawm cov organic thiab nitrification. Txawm li cas los xij, zoo li txhua qhov kev kho mob nyuaj, lawv yuav tsum tau ua kom zoo, zoo - npaj kev saib xyuas kom tsis txhob muaj kev ua haujlwm tsis zoo thiab cov khoom siv tsis ua haujlwm. Los ntawm tsab xov xwm no, kuv yuav nthuav qhia cov ntaub ntawv ntxaws ntxaws uas qhia tau tias yuav ua li cas cov txheej txheem kev saib xyuas tau daws teeb meem nyuaj rau kev ua haujlwm hauv ntau lub chaw kho mob, nrog rau cov pov thawj-raws li kev coj ua zoo tshaj plaws uas koj tuaj yeem siv tau hauv koj lub chaw.
Qhov tseem ceeb ntawm oxidation ditch txij nkawm encompasses ntau yam:tiv thaiv kev nqis peev, kom ntseeg tau tias zoo ib yam effluent zoo, txo cov nqi khiav lag luam, thiabua tau raws li cov kev cai nruj heev. Kev tsis saib xyuas kev saib xyuas tuaj yeem ua rau muaj qhov tshwm sim loj nrog rau cov txheej txheem tsis ua haujlwm, nce kev siv zog, thiab txawm tias tso cai ua txhaum cai. Raws li kuv qhov kev paub dhau los ntawm ntau qhov chaw, ib qhov dej zoo - cov txheej txheem kev saib xyuas rau oxidation ditches feem ntau hais txog peb qhov tseem ceeb:niaj hnub tiv thaiv kev saib xyuas, khoom siv- kev saib xyuas tshwj xeeb, thiabtxheej txheem optimization kev cuam tshuam. Cov kev tshawb fawb hauv qab no yuav qhia tau tias cov ntsiab lus no koom ua ke rau hauv cov kev pab tu kom zoo.
Case Study 1: Kev Tiv Thaiv Kev Tiv Thaiv thiab Kev Teb sai hauv Henan Ruzhou
Peb thawj cov ntaub ntawv kawm tshuaj xyuas txog kev tiv thaiv kev tiv thaiv kev ua tau zoo los ntawm Chengdong Wastewater Treatment Company hauv Henan Xeev, qhov twg cov txheej txheem rau kev tshuaj xyuas cov cuab yeej tso cai rau cov lus teb sai rau qhov teeb meem tshwm sim. Thaum lub Tsib Hlis 8, 2025, thaum lub sijhawm tshuaj xyuas cov cuab yeej siv niaj hnub, cov neeg ua haujlwm saib xyuas pom qhov ua haujlwm tsis zoo hauv No. 9 rotating disc ntawm East Oxidation Ditch. Lub rotating disc system yog ib qho tseem ceeb rau aeration thiab sib tov nyob rau hauv lub oxidation ditch, thiab txuas ntxiv ua hauj lwm nrog no malfunction yuav muaj ncaj qha cuam tshuam rau kev kho mob efficiency thiab tej zaum yuav ua rau lub cev tsis ua hauj lwm.
Lub tuam txhab tam sim ntawd tau siv lawv cov txheej txheem teb xwm txheej ceev, xa cov neeg ua haujlwm kho tshuab mus rau qhov chaw. Tom qab kev tshuaj xyuas tag nrho, pab pawg tau txheeb xyuas qhov laj thawj vim li cas lub reducer tsis ua hauj lwm nyob rau hauv lub rotating disc. Txhawm rau daws qhov no, lawv tau tsim pab pawg kho mob xwm txheej ceev nrog Fan Minzheng ua tus thawj coj. Tom qab ntau qhov kev sib tham, pab pawg tau tsim ib txoj kev kho kom zoo uas tau txais kev pom zoo los ntawm kev tswj hwm.
Cov txheej txheem kho tiag tiag koom nrog ntau cov kauj ruam ua tib zoo:
- Siv cov cuab yeej nqa nqa los nqa thiab tso cov oxidation ditch rotating disc reducer rau kev saib xyuas
- Disassembling lub coupling thiab hloov cov bearings hnav
- Ntxiv aeration disc daim hlau
- Txhim kho lub oxidation ditch rotating disc puag
Los ntawm kev sib koom tes no, pab pawg saib xyuas kev ua haujlwm tau kov yeej ntau yam kev cov nyom thiab ua tiav kev kho tsis pub dhau rau 6 teev, rov kho cov cuab yeej siv li qub thaum 6:00 teev tsaus ntuj tib hnub ntawd. Cov lus teb nrawm no tau ua kom muaj kev ua haujlwm tsis tu ncua ntawm lub nroog cov khoom siv kho dej khib nyiab thiab cov txheej txheem kev ruaj ntseg.
Cov ntaub ntawv no qhia tau hais tias muaj txiaj ntsig zoo ntawm kev muaj cov txheej txheem kev tiv thaiv kev tiv thaiv nrog cov txheej txheem tsim kom muaj kev teb sai. Cov nroj tsuag npaj tau tso cai rau lawv los daws qhov teeb meem tseem ceeb ntawm cov cuab yeej tsis ua haujlwm sai thiab ua tau zoo, tiv thaiv dab tsi tuaj yeem tsim los ua kev cuam tshuam tseem ceeb. Pab neeg saib xyuas tsis yog tsuas yog daws qhov teeb meem tam sim no xwb tab sis kuj ntxiv dag zog rau cov cuab yeej tiv thaiv kev ua tsis tiav yav tom ntej los ntawm kev txhim kho hauv paus, ua kom pom qhov ua tau zoo ntawm cov kev pabcuam tu kom zoo.
Cov lus: Cov ntsiab lus ntawm Kev Tiv Thaiv Kev Tiv Thaiv Kev Ua Haujlwm thiab Kev Ua Haujlwm ntawm Henan Ruzhou Cog
| Kev Saib Xyuas Kev Ua Haujlwm | Kev siv ntau zaus | Cov txiaj ntsig tseem ceeb | Cov neeg koom nrog |
|---|---|---|---|
| Kev tshuaj xyuas cov khoom siv niaj hnub | Txhua hnub | Thaum ntxov ua txhaum | Cov neeg ua haujlwm saib xyuas |
| Kev kho cov khoom siv kho tshuab | Raws li xav tau (raws li kev tshuaj xyuas) | 6-teev ceev teb | Pab neeg kho tshuab |
| Kev saib xyuas reducer | Raws li xav tau | Kev tiv thaiv kev tawg loj | Pab neeg kho tshwj xeeb |
| Txhim khu kev txhim kho | Thaum kho | Txhim khu kev ntseeg ntev ntev - | Cov kws kho mob |
Case Study 2: Equipment Optimization and Retrofitting in Naning Langdong Plant
Peb cov ntaub ntawv thib ob tshawb nrhiav qhov kev sib tw ua haujlwm nyuaj ntxiv nrog rau kev txhim kho cov cuab yeej zoo ntawm Langdong Wastewater Treatment Plant Phase II. Ntawm no, cov nroj tsuag tau ntsib teeb meem tsis tu ncua nrog kev siv cov pa oxygen tsawg thiab tsis ua haujlwm siab ntawm cov khoom siv thawb hauv lawv cov oxidation ditch. Cov teeb meem no tau ua rau tsis yog-kev ua haujlwm li qub ntawm oxidation ditch thiab deteriorating effluent zoo .
Tsis zoo li cov ntaub ntawv kho mob yav dhau los, qhov xwm txheej no xav tau cov cuab yeej siv tswv yim kom zoo dua. Hauv xyoo 2020, cov nroj tsuag tau siv cov kev hloov pauv dav dav rau oxidation ditch, suav nrog kev hloov thiab kho cov khoom qub thawb ntws hauv oxidation ditch. Cov khoom siv thawb ntws hauv oxidation ditches ua haujlwm tseem ceeb dual kev ua haujlwm ntawm kev tswj cov cawv sib xyaw thiab ua kom cov pa oxygen txaus. Thaum cov khoom no ua tsis tau zoo, tag nrho cov txheej txheem lom neeg yuav raug cuam tshuam.
Pab pawg kws tshaj lij ntawm Langdong Plant tau siv cov txheej txheem rov qab ua haujlwm uas suav nrog:
- Kev ntsuas kev ua tau zoontawm cov khoom siv thawb ntws uas twb muaj lawm
- Xaiv cov khoom siv kho dua tshiabtsim los rau kev ua haujlwm siab dua thiab kev ntseeg siab
- Precision installationnrog kev txheeb xyuas kev sib raug zoo thiab kev txheeb xyuas kev ua haujlwm
- Tshaj tawm - kev saib xyuas rov qablos ntsuas qhov kev txhim kho kev ua haujlwm
Cov txiaj ntsig ntawm cov cuab yeej no- tsom ntsoov rau kev saib xyuas tau zoo heev. Tom qab siv cov kev hloov pauv, kev siv cov pa oxygen ntawm cov oxidation ditch tau txhim kho zoo, cov dej ntws tau zoo dua tuaj, thiab tib lub sijhawm txo lub zog siv ntawm cov khoom siv thawb, txuag cov nqi ua haujlwm. Cov ntaub ntawv no qhia meej tias kev hloov kho cov cuab yeej siv tswv yim, txawm tias yuav tsum tau nqis peev peev, tuaj yeem ua rau muaj txiaj ntsig zoo rau kev ua haujlwm thiab txuag nqi rau lub sijhawm ntev.
Dab tsi ua rau cov ntaub ntawv no tshwj xeeb yog qhia yog tias pawg saib xyuas tau saib dhau qhov kev kho yooj yim rau kev txhim kho qhov system. Ntau dua li rov kho cov cuab yeej ua tsis tau zoo ib yam, lawv tau siv cov kev daws teeb meem tas mus li los ntawm kev hloov kho thev naus laus zis. Txoj hauv kev no sawv cev rau cov tswv yim kho kom zoo dua qub uas tsom mus rau lub neej- kev ua kom zoo dua tus nqi ntau dua li tsuas yog hais txog qhov ua tsis tiav tam sim ntawd.
Case Study 3: Process Optimization and Transformation in Sichuan Guangyuan
Qhov thib peb qhov kev tshawb fawb tshuaj xyuas seb cov txheej txheem optimization tuaj yeem ua haujlwm li cas thaum oxidation ditches ntsib cov kev txwv tsim nyog. Hauv Sichuan cov dej khib nyiab kho, cov txheej txheem oxidation ditch raug kev txom nyem los ntawm kev ua tsis zoo denitrification, tsis muaj peev xwm tswj tau sab hauv reflux, hydraulic luv -circuiting ua rau sludge deposition, cov pa roj carbon ntau ntxiv, thiab tshem tawm cov nitrogen tsis zoo. Cov teeb meem no ua ke ua rau nquag tag nrho cov nitrogen (TN) ntau tshaj nyob rau hauv cov effluent.
Hauv qhov xwm txheej no, kev saib xyuas ib leeg yuav tsis daws cov txheej txheem hauv qab tsis zoo. Cov nroj tsuag xav tau kev hloov pauv dav dav. Cov kev daws teeb meem cuam tshuam txog kev teeb tsa ntawm thaj chaw biochemical tank los ntawm kev ntxiv cov phab ntsa los hloov cov txheej txheem oxidation ditch rau hauv cov txheej txheem Anaerobic-Anoxic-Oxic (A²/O). Tsis tas li ntawd, lub retrofit suav nrog kev teeb tsa ntawm cov twj reflux sab hauv thiab cov kav dej.
Qhov kev hloov pauv no ua rau muaj kev txhim kho loj heev:
- Qhov nruab nrab cov kua dej TN txo qis los ntawm 13.78 mg / L ua ntej hloov mus rau 6.96 mg / L tom qab hloov pauv.
- Nitrogen tshem tawm efficiency ho txhim kho
- Cov dej zoo ruaj khov nrog 100% kev ua raws li TN cov qauv
Ib yam li ntawd, hauv Wuhai City Wastewater Treatment Plant txoj haujlwm hloov kho thev naus laus zis, qhov chaw tau ua tiav los ntawm Carrousel oxidation ditch txheej txheem rau kev hloov kho A² / O txheej txheem. Qhov kev hloov pauv no tau ua rau cov nroj tsuag kom tau raws li Qib A tus qauv ntawm "Kev Kho Dej Hauv Nroog Cov Dej Ncua Dej Nroj Tsuag Cov Khoom Siv Hluav Taws Xob (GB18918-2002)," nrog COD, ammonia nitrogen, thiab tag nrho cov phosphorus ncav cuag cov dej saum npoo Class V.
Cov xwm txheej no qhia tau hais tias qee qhov kev sib tw hauv kev saib xyuas yuav tsum muaj cov txheej txheem -qib kev cuam tshuam ntau dua li cov khoom siv- tsom ntsoov rau cov kev daws teeb meem. Thaum oxidation ditches ntsib cov kev txwv tsim tsim hauv kev ua kom tau raws li qhov yuav tsum tau ua kom nruj ntxiv, cov txheej txheem hloov pauv tau dhau los ua qhov zoo tshaj plaws ntawm "kev tu" kom ntseeg tau ntev - lub sijhawm ua haujlwm tau zoo.
Cov lus: Cov Khoom Siv Kho Kom Zoo Rau Cov Khoom Siv Oxidation Ditch sib txawv
| Cov khoom siv | Tej Teeb Meem | Cov tswv yim kho mob | Performance Indicators |
|---|---|---|---|
| Rotating discs / diffusers | Mechanical tsis ua hauj lwm, Txo oxygen hloov | Kev tshuaj xyuas tsis tu ncua, Kev hloov pauv kabmob, Disc reinforcement | Oxygen hloov efficiency, Zog noj |
| Push flow devices | Siab tsis ua hauj lwm tus nqi, Inadequating mixing | Retrofit nrog cov qauv siv tau zoo, Kev txheeb xyuas kev ua haujlwm tsis tu ncua | Kev ceev ceev, kev siv zog |
| Tsav units/Reducers | Overheating, vibration, tsis ua haujlwm | Kev vibration tsom xam, ntsuas cua sov, kev hloov pauv hloov | Kev ntseeg tau, txo suab nrov |
| Weirs thiab rooj vag | Kev faib tawm tsis sib xws, luv -circuiting | Kev hloov kho theem, kev kuaj xyuas kev ncaj ncees | Hydraulic tuav lub sij hawm, Sludge faib |
Kev coj ua zoo tshaj plaws hauv Oxidation Ditch Maintenance: Ib txoj hauv kev zoo
Raws li cov ntaub ntawv no thiab kuv cov kev paub dhau los, kuv tau tsim cov txheej txheem txheej txheem rau oxidation ditch txij nkawm uas hais txog cov teeb meem tseem ceeb tshaj plaws ntawm kev ua haujlwm:
1. Kev Pabcuam Tiv Thaiv Kev Tiv Thaiv Kev Tiv Thaiv
Siv cov txheej txheem tiv thaiv kev tiv thaiv kev tiv thaiv uas suav nrog kev tshuaj xyuas txhua hnub, kev txheeb xyuas qhov ua tau zoo txhua lub lim tiam, thiab kev ntsuam xyuas txhua hli. Kev soj ntsuam pom txhua hnub yuav tsum tsom rau cov khoom siv ua haujlwm, kev sib xyaw ua ke, thiab ua npuas dej / khib nyiab. Cov kev kuaj xyuas txhua lub limtiam yuav tsum suav nrog kev ntsuas cov pa oxygen yaj, cov dej cawv sib xyaw ua pov thawj, thiab cov ntaub ntawv ua haujlwm ntawm cov khoom siv. Kev ntsuam xyuas txhua hli yuav tsum suav nrog kev kuaj xyuas kev ncaj ncees, kev txheeb xyuas cov khoom siv kom ntxaws, thiab kev tiv thaiv kev hloov pauv raws li cov lus pom zoo ntawm cov chaw tsim khoom thiab keeb kwm kev ua haujlwm.
2. Kev ua tau zoo-Txoj kev hloov khoom siv
Tsis yog tos rau cov khoom siv tsis ua haujlwm, tsim kom muaj kev ua haujlwm tsis zoo uas ua rau muaj kev hloov pauv lossis kho dua tshiab. Rau cov khoom tseem ceeb xws li aerators, thawb ntws cov cuab yeej, thiab cov reducers, saib xyuas kev siv hluav taws xob, kev ua haujlwm tau zoo, thiab cov khoom siv kho tshuab los txiav txim siab lub sijhawm hloov kho kom zoo ua ntej ua tsis tiav. Naning Langdong rooj plaub pom tau hais tias kev hloov kho cov cuab yeej siv tswv yim tuaj yeem ua tau txiaj ntsig kev ua haujlwm uas deb tshaj lawv cov nqi.
3. Txheej txheem-Tsom ntsoov rau kev sib koom ua ke
Cov kev pab tu niaj hnub no yuav tsum sib txuas cov txheej txheem kev ua tau zoo nrog kev saib xyuas cov cuab yeej siv niaj hnub. Raws li pom nyob rau hauv Sichuan Guangyuan rooj plaub, qee qhov kev sib tw ua haujlwm yuav tsum tau hloov kho cov txheej txheem ntau dua li kev kho cov khoom siv. Cov pab pawg tu yuav tsum suav nrog cov txheej txheem tshwj xeeb uas tuaj yeem txheeb xyuas thaum muaj teeb meem kev ua haujlwm tshwm sim los ntawm kev txwv tsim ntau dua li cov khoom siv tsis raug.
4. Cov ntaub ntawv thiab kev txhim kho txuas ntxiv
Khaws cov ntaub ntawv ntxaws ntxaws ntawm txhua yam haujlwm tu, kev ua haujlwm ntawm cov cuab yeej siv, thiab cov txheej txheem ua tiav. Tshawb xyuas cov ntaub ntawv no txhawm rau txheeb xyuas cov teeb meem tshwm sim, ua kom zoo dua qub, thiab ua pov thawj -raws li kev txiav txim siab txog kev hloov khoom siv lossis kev hloov kho cov txheej txheem. Cov lus teb ceev ceev hauv Henan Ruzhou rooj plaub tau ua tau vim muaj cov txheej txheem tsim thiab cov ntaub ntawv.
Xaus: Mus rau Kev Txhim Kho Kev Kho Kom Zoo
Oxidation ditch txij nkawm sawv cev rau kev cog lus tsis tu ncua rau kev ua haujlwm zoo dua li kev ua haujlwm tsis tu ncua. Cov ntaub ntawv tshawb fawb tau nthuav tawm qhia tau hais tias cov kev pabcuam tu vaj tse zoo sib xwsmuaj peev xwm teb tau sairau cov teeb meem tshwm sim,kev tswj cov cuab yeej siv tswv yimlos tiv thaiv cov teeb meem rov tshwm sim, thiabtxheej txheem- theem kev xavlos daws cov kev txwv tsim nyog. Cov nroj tsuag uas siv txoj hauv kev no tuaj yeem txhim kho kev ntseeg tau ntawm kev kho mob, txo lub neej- cov nqi mus ncig, thiab tswj kom ua raws li cov kev xav tau ntawm cov dej ntws tawm.
Cov kev pab cuam kho kom zoo tshaj plaws sib npaug qhov kev xav tau kho tam sim nrog ntev - kev ua kom zoo dua qub, lees paub tias cov tshuab no sawv cev rau pej xeem kev nqis peev tseem ceeb uas yuav tsum tau tiv thaiv los ntawm kev saib xyuas zoo. Raws li cov kev cai kho mob tau dhau los ua nruj thiab muaj hnub nyoog tsim kho, txoj hauv kev zoo tshaj plaws rau oxidation ditch tu yuav dhau los ua qhov tseem ceeb dua rau cov dej khib nyiab thoob ntiaj teb.